▎ 摘　　要

In this study, mesoporous titanosilicate (MTS)/reduced graphene oxide (RGO) composite materials were prepared as a function of the RGO content and used as novel adsorbents for a mixed-solute solution of methylene blue and rhodamine B (RhB). Adsorption capacities of the composite materials were higher than those of MTS or RGO by themselves, demonstrating that adsorptive performances of the composite materials are better than the inorganic or organic materials alone. Composite material containing 20 wt% RGO (20MTSG) showed the best adsorption capacity for both contaminants where its adsorptive behavior in the mixed-solute solution can be ascribed to the unique morphology of the large layered structure of MTS and RGO, as well as many aggregates of small-sized plates. Compared to the other composite materials, 20MTSG contained an abundant edge structure of RGO, resulting in a relatively higher RhB adsorption capacity. RhB preferred the adsorption sites on RGO to the adsorption sites on MTS due to steric hindrance inside the mesopores of MTS.